1 Answer

This looks like a boot sequence issue that's a result of unwanted BIOS settings. PXE is a network boot option that I don't think you are using. Go ahead and disable that in the BIOS along with any other network boot options.

Go to your BIOS Settings and change the boot order to have your hard disk, and under that, GRUB (F28) at the top of the list. That will ensure that you boot into F28 by default instead of the network boot that you most likely do not want.

If you cannot figure out where that is or if you've edited your BIOS too much, you could always run a reset on your BIOS (there should be an option next to "Save/Discard Changes" to do so).